It is an error if a class with one or more abstract methods is not explicitly declared abstract.

A. True

B. False

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  1. With javadoc, which of the following denotes a javadoc comment?
  2. When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
  3. Every call to wait has a corresponding call to notify that will eventually end the wafting.
  4. The use of protected keyword to a member in a class will restrict its visibility as follows:
  5. When we invoke repaint () for a Component, the AWT invokes the method:
  6. When we implement the Runnable interface, we must define the method
  7. A package is a collection of
  8. The length of a string object 's1' can be obtained using the expression s1.length.
  9. If a=10 and b= 15, then the statement x =(a>b)?a:b; assigns the value 15 to x.
  10. In a single Servlet class we can use____________
  11. Two methods cannot have the same name in Java.
  12. Give file is a file object, which of the following are legal statements to create a new file.
  13. class.forName(...) creates an instance of java ODBC driver
  14. Which of the following control expressions are valid for an if statement?
  15. We can over load methods with differences only in their return type.
  16. Which of the following will produce a value of 10 if x = 9.7?
  17. What does the following line of code do?TextField text=new TextField(10);
  18. Which of the following statements are true?
  19. The setBackground() method is part of the class
  20. Consider the following class definition.Class Student extends String{}What happens when we try to compile…
  21. What is error in the following class definitions? abstract class xy { abstract sum(int x, int y)…
  22. All the bitwise operators have the same level of precedence in Java.
  23. The default case is always required in the switch selection structure.
  24. The import statement is always the first no comment statement in a Java program files.
  25. Which of the following classes are available in the java.lang package?
  26. JdbcOdbcDriver is an object of Object class
  27. Which of the following are the wrapper classes?
  28. It is an error to catch the same type of exception in two different catch blocks associated with a particular…
  29. An EJB is a server-side component that encapsulates the business logic of an application
  30. What is java -g used for?